Inking roller for printing presses



y 1943- H. J. LUEHRS 2,319,616

INKING ROLLER FOR PRINTING PRESSES' Original Filed April 12, 1941 2 Sheets-Sheet l fwmlwm O Q Q O O Q G) O 0 O lvmumbonmmlml M [\\1 N INVENTOR.

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y 1943- H. J.'LUEHR-S INKING ROLLER FOR PRINTING PRESSES Original Filed April 12, 1941 2 SheetsSheet 2 IN V EN TOR.

Patented May 18, 1943 INKING ROLLER. FOR PRINTING masses Hans J. Luehrs, Westerly, R.'I., assignor to C. B. Cottrell & Sons Company, Westerly, R. I., a corporation of Delaware Original application April 12, 1941. Serial No.

Divided and this application October 31, 1942, Serial No. 464,015

4 Claims.

My invention consists in a novel inking roller which may be used in connection with various types of inking mechanisms for printing presses, said inking roller being hollow and adapted to contain a supply of liquid ink and having a pervious side wall of hard material, such as pervious bronze through which the liquid ink may pass outwardly to the exterior surface of the inking roller to be transferred either directly or indianti-friction bearings I and 8, in the side frames A bracket I I carried by the side frame III supports a liquid ink supply tankl2. A liquid supply pipe I3 leads through a rotary joint It to a cap I5 which removably closes the open end of the trunnion 6. For feeding the liquid ink under pressure to the interior of the inking roller the tank I2 may be provided with a hand pump I6. A pressure gage Il may also be provided for the tank I2. A pressure regulating valve I8 may be rectly, as may be desired, to the form cylinder 10 provided in the cap I 9 which removably closes of a printing press. Pervious bronze suitable for the open end of the trimnion 5.

the purpose hereinafter set forth is in extensive In the form shown in Figs. 3'and 4 the inking commercial production by different manufacroller comprises a pervious side wall in the form turers and it is marketed under various trade of a cylindrical sleeve 20 of hard material, as names such for instance as Oilite, Durex, and for instance pervious bronze which is removably Ledaloyl. secured to ends 2| and 22, which ends are pro- My invention also comprises means for feedvided with hollow trunnions 23 and 24 which are ing the liquid ink, preferably under pressure, to removably and rotatably mounted, as by the antithe interior of the inking roller. friction bearings I and 8 in the side frames 9 My invention also comprises a pressure regula and III respectively of the inking mechanism. tor for the interior of the inking roller to obtain The means for feeding the liquid ink under presthe best results in the passage of the liquid ink sure into the interior of the inking roller may to the exterior of the roller and the. transfer be the same as that shown with respect to the thereby. in regulable quantities. form shown in Fig. 1 and the pressure regulating Practical embodiments of my invention are 25 valve I8 and its cap I9 may be the same as that represented in the accompanying drawings, in shown in Fig. 1. In the form shown in Fig. 3 which it will be noted that the perforated inner wall Fig. 1 represents one form of inking roller in and the sleeve retaining collars shown in Fig. l longitudinal central section, the means for feedare omitted. ing the liquid ink under pressure being shown In cases where the inking roller directly transin side elevation; fers the ink to the form cylinder, as shown in Fig. 2 represents the inking roller in cross sec- Fig. t ay be advisable o P v e a G SO tion, in a position to transfer the liquid ink diblade 25 engaging the exterior surface of the rectly to a form cylinder; pervious side wall of the roller to control the Fig. 3 represents anothepform of inking roller amount of ink transferred to the said form cylinin longitudinal central section; and der.

Fig. 4 represents the inking roller in cross It will be understood that the ink sup to section in a position to transfer the liquid ink the surface of the inking roller may be varied, indirectly through intermediate rollers to a form or instan y 8 Variation in the P fifl cylinder. 40 of the side wall of the roller or by a variation In the form shown in Figs. 1 and 2 the hollow in the pressure. Also, it will be observed that inking roller is shown as having an inner perfothe centrifugal force exerted on the liquid ink rated cylindrical side wall I and an outer conwithin the inking roller will increase as the rotacentric side wall 2 in the form of a pervious sleeve tive speed of the roller is increased, thereby of hard material, as, for instance, pervious lowing more ink to pass through the pervious bronze, removably positioned on the inner side side wall of the roller as the press Speed increaseswall between removable collars 3 and 4. This The inking roller illustrated in F s- 1 nd 2 perforated inner side wall I of the inking roller and described but not claimed herein, forms the is provided with hollow trunnions 5 and I5 which subject matter of my copending application filed are removably and rotatably mounted, as by April 12, 1941, Serial Number 388219 of which this application is a division.

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention, and hence supply of liquid ink and comprising a cylindrical sleeve of pervious hard material, ends removably secured to the sleeve and provided with hollow trunnions, means for feeding liquid ink under pressure to the interior of the roller through one hollow trunnion, and a pressure regulating valve in the other hollow trunnion.

3. A hollow inking roller adapted to contain a supply of'liquid ink and comprising a cylindrical sleeve of pervious bronze. ends removably secured to the sleeve and provided with hollow trunnions, and means for feeding liquid ink under pressure to the interior of the roller.

4. A hollow inking roller adapted to contain a supply of liquid ink and comprising a. cylindrical sleeve of pervious bronze, ends removably secured to the sleeve and provided with hollow trunnions, means for feeding liquid ink under pressure to the interior of the roller through one hollow trunnion, and a pressure regulating valve in the other hollow trunnion.

HANS J. LUEHRS. 

